Chihuahuas have about 0.2 percent wolf ancestry, according to a new study. While that chihuahua might seem about as similar to a wolf as a shrub is to a mighty redwood tree, some small breeds like the ...

The gray wolf, also called the timber wolf, is the largest member of the canine family with fur ranging from gray to brown, black or white. Smithsonian's National Zoo and Conservation Biology ...

Every family dog carries a long evolutionary story in its cells, one that traces back to gray wolves even if the animal on your couch looks more like a teddy bear than a predator. When people send off ...

Wolf-dog hybrids are bred by crossing domestic dogs with wolves, sometimes just a few generations back. They carry physical traits and instincts that set them far apart from standard breeds. These ...

DENTON, Mont. -- An animal previously believed to be a wolf-dog hybrid is actually just a wolf, a DNA test revealed. "The lab compared the animal's DNA with thousands of other DNA samples from wolves, ...